He fought as a Royalist in the Civil War and served as Governor of Bombay from 1666 to 1667.
The Lucas Baronetcy, of Ashtead Park in the County of Surrey and of Lowestoft in the County of Suffolk, was created in the Baronetage of the United Kingdom on 25 July 1887 for Thomas Lucas.
For his services in the building trade with the company the Lucas Brothers.
The family seat was Warnham Court, near Horsham, in the County of Sussex.
The heir apparent is the present holder's son Stephen Ralph James Lucas (1965-).